Mazchna (pronounced Mash-ner) is the second-to-lowest level Slayer master, giving tasks to players with a Combat level of 20 and above. He is located in Canifis, and therefore completion of the Priest in Peril quest is required to access him. Mazchna is notable for giving tasks close to his area. His tasks are relatively easy and ideal for players with lower combat levels.

He has a unique sword and is wearing an adamant platebody with what appears to be cloth sleeves, neither of which are obtainable by players. He, along with the Hero, Oziach and Vannaka are the few NPC's to possess custom unobtainable armour.